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DateTue, 26 Feb 2008 12:05:27 -0800
FromJeremy Fitzhardinge <>
SubjectRe: 2.6.25-rc1 xen pvops regression
Mark McLoughlin wrote:
>> @@ -371,6 +372,9 @@ void __init dmi_scan_machine(void)
>>  		}
>>  	}
>>  	else {
>> +		if (e820_all_mapped(0xF0000, 0xF0000+0x10000, E820_RAM))
>> +			goto out;
>> 
>
> 	One issue with using the e820 map for this is that a Xen Dom0 will also
> have this region marked as RAM in the e820 map, but will set up a fixmap
> for it, allowing dmi_scan_machine() to map the region.
> 

Would it be easier to just fake up a mapping so that window points to 
the real dmi area, and mark E820 accordingly?

    J
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